Efficiency of electrically small antennas combined with matching networks
Abstract
In applications where electrically small antennas are necessary and transmitter power is limited, the system efficiency may be a critical parameter in determining the feasibility of the system. The principle of conservation of energy is used to determine the efficiency of an antenna combined with a matching network composed of elements with finite quality factors. It is shown that conditions for maximum efficiency can be met by using a simple L section as the matching network. Illustrative examples concern a cryogenic loop antenna and a ferrite loaded loop antenna.
- Publication:
-
IEEE Transactions on Antennas and Propagation
- Pub Date:
- May 1977
- DOI:
- 10.1109/TAP.1977.1141589
- Bibcode:
- 1977ITAP...25..369S
- Keywords:
-
- Antenna Design;
- Energy Conservation;
- Impedance Matching;
- Loop Antennas;
- Transmission Efficiency;
- Cryogenics;
- Design Analysis;
- Electric Wire;
- Electrical Impedance;
- Ferrites;
- Network Analysis;
- Radio Reception;
- Electronics and Electrical Engineering